Commercial 3D Printing Quantity Formula
Learn how commercial 3D printing batch material, production cost, quote price, and unit price are calculated.
This formula estimates the quoted price for a batch of identical 3D-printed parts. It combines material, machine time, shared setup, and per-unit post-processing costs, then applies a chosen markup to estimate a commercial quote.
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Quoted Unit Price
Where:
Calculate each part's material and printing costs, add its share of the batch setup cost and finishing cost, then increase that base cost by the markup percentage.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| Q - orderQuantity | The number of identical parts in the batch order. | number |
| W - materialWeightPerUnit | Estimated material used for one finished part, including normal supports where applicable. | weight |
| C_m - materialCostPerGram | Landed material cost for each gram used. | currency |
| T_p - printTimePerUnit | Machine print time needed for one part, excluding setup and post-processing. | hours |
| R - machineRatePerHour | Hourly machine rate used to recover operating, equipment, and included labor costs. | currency |
| T_s - setupTime | One-off batch preparation time. | hours |
| C_p - postProcessingPerUnit | Direct finishing, inspection, cleaning, or packaging cost for one part. | currency |
| M - markupPercent | Markup added to estimated production cost before quoting. | percent |
Step-by-Step Calculation
Calculate total material required
Multiply the material used per part by the number of parts to estimate material needed before any separate failure or waste allowance.
totalMaterialRequired = orderQuantity * materialWeightPerUnit
Calculate material cost per unit
The material cost for one part is its estimated weight multiplied by the cost per gram.
materialCostUnit = materialWeightPerUnit * materialCostPerGram
Calculate machine cost per unit
Multiply each part's print time by the hourly machine rate.
printMachineCostUnit = printTimePerUnit * machineRatePerHour
Calculate and allocate setup cost
Convert batch setup hours into a cost, then spread that one-off cost evenly across the ordered parts.
setupCostUnit = (setupTime * machineRatePerHour) / orderQuantity
Calculate base cost per unit
Add material, printing, allocated setup, and direct post-processing costs.
baseCostPerUnit = materialCostUnit + printMachineCostUnit + setupCostUnit + postProcessingPerUnit
Calculate the batch quote
Multiply the base unit cost by quantity and apply the selected markup.
quotedTotal = (baseCostPerUnit * orderQuantity) * (1 + markupPercent / 100)
Calculate production hours
Total machine hours include printing every part and the one-off setup time, but exclude post-processing time.
totalProductionHours = (printTimePerUnit * orderQuantity) + setupTime
Example: Quote for 100 identical production parts
Total material
100 × 80 g
8,000 g
Material cost per unit
80 × $0.06
$4.80
Machine cost per unit
4 × $12.00
$48.00
Setup cost per unit
(2 × $12.00) ÷ 100
$0.24
Base cost per unit
$4.80 + $48.00 + $0.24 + $3.00
$56.04
Total production cost
$56.04 × 100
$5,604.00
Quoted price
$5,604.00 × 1.25
$7,005.00 total; $70.05 per unit
Production time
(4 × 100) + 2
402 hours
Final Result
For 100 identical parts, the estimated quote is $70.05 per unit and $7,005.00 for the batch, with 402 machine-hours and 8,000 g of material required.
Assumptions
- ✓Every ordered part has the same material use, print duration, and finishing requirement.
- ✓The material weight per unit already includes normal support material where applicable.
- ✓The same hourly machine rate is applied to both print time and batch setup time.
- ✓Setup cost is allocated evenly across every unit in the order.
- ✓Markup is applied to the calculated production cost rather than treated as a margin percentage.
Limitations
- !The estimate does not separately model failed prints, purge material, scrap, rework, or machine downtime.
- !It excludes shipping, taxes, design work, platform fees, special tooling, and other costs not entered.
- !Total production hours are machine-hours and do not automatically reflect parallel capacity across multiple printers.
- !Post-processing is treated as a fixed cost per unit, although actual finishing effort may vary by geometry or quality requirements.
Common Mistakes to Avoid
Entering filament purchase price per spool rather than converting it to a cost per gram.
Using print time that includes setup time, then entering setup time again and double-counting it.
Omitting supports, rafts, purge material, or expected waste from the material estimate.
Entering a profit margin as though it were markup; markup is added to cost in this calculation.
Treating total machine-hours as elapsed turnaround time when production can run on several printers.
Adding post-processing to both the machine rate and the post-processing field.
Related Formulas
Frequently Asked Questions
How is the commercial 3D printing unit price calculated?
The calculation adds material cost, print machine cost, allocated setup cost, and post-processing cost per part. It then applies the entered markup percentage.
What is the formula for total 3D printing material required?
Total material required equals order quantity multiplied by material weight per unit. The result is before any separate allowance for failed prints or waste.
Why does unit cost fall as order quantity increases?
The batch setup cost is divided across more units. Material, print-time, and per-unit finishing costs still increase with each additional part.
What is included in total production hours?
The result includes batch setup time plus the print time for every part. It excludes post-processing time and any allowance for downtime or scheduling.
Is markup the same as profit margin?
No. This calculator applies markup as a percentage added to production cost. Profit margin is calculated from selling price and is not the same percentage.
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